Photographic development sink and tray construction

ABSTRACT

A tray, for use in a photographic processing sink having a partition separating a basin from a drain trough, has an extended lip portion along a side edge engageable over the partition to provide a pivot axis about which the tray may be pivoted for controllably dumping material from the tray into the drain trough. To enhance selectively controlled rocking of the tray, a pair of handle portions are integrally embossed on opposite sides of the tray at relatively offset locations, and tapered sidewalls provide a configuration which reduces spillage.

United States Patent 1151 3,641,912 Mills et a1. Feb. 15, 1972 [54] PHOTOGRAPHIC DEVELOPMENT SINK 2,892,561 6/1959 AND TRAY CONSTRUCTION 2,909, 7 /1959 3,067,667 12/1962 [72] Inventors: Thomas C. Mills, Wheaton; Stanley T. 3 21 11/1965 Gresens, Downers Grove, both of 111. 3 334 5 7 3/19 7 [731 Assignee 'ff'i Des FOREIGN PATENTS 0R APPLICATIONS alnes, 651,877 4/1951 Great Britain ..220/94 A [221 1 668,241 3/1952 Great Britain ..22o/94 A [21] Appl. No.1 861,375

Primary Examiner-Samuel S. Matthews Assistant ExaminerAlan Mathews [52] US. Cl. ..9S/95, 95/99, 220/94 A,

206/72 AttorneyHil1, Sherman, Meroni, Gross & Simpson [51] Int. Cl. ..G03d 13/04 57 TRAC [58] Field '01 Search ..95/89, 95, 96, 97, 98, 99;

0 R, D16 6 94 206/72, 73 A'tray, for use in a photographic processing sink having a par- 1 tition separating a basin from a drain trough, has an extended [56] Refefences cited lip portion along a side edge engageable over the partition to 1 provide a pivot axis about which the tray may be pivoted for UNITED STATES PATENTS controllably dumping material from the tray into the drain trough. To enhance selectively controlled rocking of the tray, a pair of handle portions are integrally embossed on opposite sides of the tray at relatively ofiset locations, and tapered sidewalls provide a configuration which reduces spillage.

2,887,705 5/1959 Serwer ..220/1UX 8Claims,5DrawingFigures x V Z? 6/ I w .46-

as 25 2.; g Z4 15 PATENIEnFEa 15 um I SHEET 2 0Fv 2 I I p INVENTORS T/zomas 6.

Gian/e 7. 67836196 4% TTORN E YS PI-IOTOGRAP-I-IIC DEVELOPMENT SINK AND TRAY CONSTRUCTION BACKGROUND OF THE INVENTION stop and fix solutions. An exposed film or similar sensitized material to be developed is successively immersed in the various solutions contained in the trays. Since temperature is a criticalfactor in photographic processing, temperature-con-' trolled conditioning water is circulated in the basin and around the trays to maintain the solution and the trays at a desired temperature.

Further, to promote uniform exposure of a film surface to the solution, it is desirable for an operator to rock the trays both in a side-to-side direction and a front-to-rear direction. Prior art tray configurations have not included handle portions arranged in a manner to allow the operator to controllably rock the tray in both a side-to-side direction and a frontto-reardirection.

When effectiveness of the solutions contained in the trays is reduced to a point where quality development is no longer possible, it is necessary for the operator to dump the contents of the tray. To avoid contamination of the water or fluid circulating in the basin with chemicals which may corrode the circulating pumps, the dumping operation must be accomplished without inadvertent spillage of the developing chemicals into the circulating fluid. Heretofore, photographic processing trays generally have not included adequate means facilitating dumping the contents of the tray without-spillage.

SUMMARY OF THE INVENTION In accordance with the principles of the present invention, a photographic processing sink has a partition formed therein and separating a basin portion, for holding a plurality of aligned trays, from a drain trough extending along a rear portion of the sink, and trays for use with the sink have an extended lip or hooklike portion engageable with an upper edge of the partition, thereby to form a pivot axis about which the tray may beupwardly pivoted to dump the contents into the drain trough. i

In particular each tray comprises a substantially planar bottom wall and upstanding front, rear and sidewall portions joined to the bottom-wall and arranged in a closed shape to form a material-receiving cavity. An outwardly projecting lip characterizedby a depending rib or flange at an outer edge thereof is formed around the periphery of the tray at upper edge portions of the upstanding walls, thereby increasing the rigidity of the tray. A portion of the lip on the tray disposed adjacent the partition whenever the tray is properly situated in the basin is configured to form the extended hooklike portion and is disposed to overlap an upper extent of the sink partition whenever the tray is shifted rearwardly with the rear wall abutting the partition.

The sidewalls have an upper edge portion tapered upwardly from the front wall to the rear wall to provide a greater depth at the rear of the tray than at the front, and thus, reducing any change of spillage when the tray contents are dumped into the drain trough.

It is also contemplated by the present invention to form the rear wall in a plane slanted upwardly and outwardly of a plane containing the bottom wall, thereby permitting complete emptying of the tray contents into the drain trough without requiring pivotingthe tray to a vertical position.

To facilitate controlled rocking of the tray both in a side-toside direction and in a front-to-rear direction, each tray has a pair of embossed handle portions disposed along opposite sidewalls at relatively offset locations with respect to a transverse axis or centerline. For example, one handle may be disposed along one sidewall in a first spacing relationship relative to the axis or centerline of the tray, while the handle on an opposite one of the sidewalls may be positioned at a different position relative to the axis or centerline, for example, forwardly of a central location.

BRIEFDESCRIPTION OF THE DRAWINGS FIG. 1 is a-perspective view of a photographic processing sink having a tray positioned in a basin portion thereof and incorporating the features of the present invention;

FIG. 2 is a partial, enlarged transverse sectional view of the processing sinkand tray shown in FIG. 1 with a dumping position of the tray illustrated in phantom lines;

FIG. 3 is a top plane view of the processing tray illustrated in FIGS. land 2;

FIG. 4 is aside elevational view of the processing tray illustrated in FIG. 3; and

FIG. 5 is a sectional view of the processing tray of the present invention taken substantially along line VV of FIG. 3.

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT ample, of reinforced plastic material and supported on a base 12. The sink top 11 is an elongated rectangular boxlike structure having a longitudinally extending rear wall 13, a pair of end walls 14, 14 and a front wall or lip portion 15 and a substantially planar, horizontally disposed bottom wall 16. A longitudinally extending partition 17 divides the sink top into a basin portion 18 and a drain trough 19 extending between the rear wall and the partition. If desired, the, sink top may also include an additional basin portion, as at 21, where exposed films or other sensitized materials may be washed and viewed subsequent to their development.

One or more trays generally indicated at 22 are disposed in the rectangular, elongated basin portion 18 of the sink top 11 for containing photographic processing solutions, for example developing, shortstop and fix solutions. Normally the trays are furnished in sets of three, and thus, the basin portion 18 has a longitudinal length sized relative to the trays 22 to accept three or more such trays.

Since photographic processing is sensitive to temperature, the basin portion 18 has appropriate inlet and outlet means connected to a source of temperature-controlled conditioning water. The conditioning water circulates through the basin l8 and around the trays 22 to maintain the trays and solutions contained therein at a fairly constant, desired temperature.

Each tray 22 comprises an integrally molded article composed, for example, of molded plastic and has a substantially planar, rectangular bottom wall 23 and a plurality of substantially upstanding sidewalls including a front wall 24, a rear wall 26 and a pair of sidewalls 27 and 28. All of the upstanding wall portions 24, 26', 27 and 28 are joined to the bottom wall 23 around the periphery thereof and are arranged to define a boxlike cavity for containing chemical solutions.

If desired, the bottom wall portion may be formed with upwardly embossed ribs as at 29 arranged to enhance the rigidity of the tray 22 and to permit cooling water to circulate between the tray bottom wall 23 and the basin bottom wall 16. As illustrated in the drawings, the embossed ribs 29 may have a substantially inverted V-shape in transverse cross section and may extend diagonally across the bottom wall 23, however, other rib configurations may be employed.

It is contemplated by the present invention to form the pair of substantially parallel sidewalls 27 and 28 with upper edge portions as at 31 slanted rearwardly upwardly so that the rear wall 26 has a greater height than the front wall 24. Thus, a depth of the cavity formed by the tray gradually increases from front-to-rear. Further, thefront wall 24 of the tray 22 has a height slightly less than the height of the sink lip or front wall 15, thereby facilitating access to photographic film contained in the tray and movement thereof from one tray to adjacent trays.

To enhance rigidity of the tray 22, a generally outwardly extending lip 32 characterized by a return or.depending flange 33 is formed at an' upper extent of the upstanding walls 24, 26, 27 and 28 and extends around a periphery of the tray.

Also, in accordance with the principles of the present invenan upper edge of the rear wall 26 and forming an extended lip or hooklike portion disposed to be engageable with the partition 17 whenever the tray 22 is supported on the sink bottom wall 16 and rearwardly shifted so that the rear wall 26 abuts the partition 17. An arcuate web portion 36 interconnects the upstanding partition 17 with a V-shaped channel portion 37 forming the drain trough 19, thereby providing a smooth surface along which the extended rear lip portion or hook 36 may glide as the tray is upwardly pivoted to a dumping position shown by phantom lines in FIG. 2. in that manner, the tray 22 of the present invention provides means cooperable with a portion of the partition 17 for defining a pivot axis about which the tray may be upwardly tilted for dumping exhausted chemical solutions into the drain trough 19, thereby substantially eliminating anypossibilit'y of spillage of the solution into the conditioning water circulating through the basin 18.

To form the extended rearlip 34 at a proper height relative to the partition 17 whenever the tray 22 is properly supported within the basin18, the rear wall has an upper extent or terminal edge 37 disposed substantially coplanar with a horizontal plane tangent to the arcuate upper web portion 36 of the partition. Also, the rear lip portion 34 slants slightly upwardly from a' horizontal plane parallel with the bottom wall, and the return flange 33 has a rear portion 38 depending from the rear lip 34 and having a lower terminal edge as at 39 disposed slightly above the arcuate web 36 whenever the tray is properly supported within the basin. In that manner whenever therear wall 26 abuts the partition 17, the rear lip portion 34 and depending rear flange 38 overlie the web 36, thereby permitting the tray 22 to pivotally move or glide around the menate web 26, and thus, forming the horizontal pivot axis about which the tray may be upwardly tilted to dump the contents thereof into the drain trough 19.

Further, the rear wall 26 is formed in a plane slanting rearwardly and upwardly of a plane containing the tray bottom wall 23 to permit complete emptying of the tray 22 without requiring the tray bottom wall 23 to be tilted to a horizontal position. It should also be noted that the greater depth provided at the rear portion of the trays by the upwardly tapered sidewalls 27 and 28 further decreases any possibility of spillage into the conditioning water circulating in the basin 18.

it is also contemplated by the present invention to provide means forming handle portions or embossments 41 and 42 along opposite ones of the pair of sidewalls 27 and 28 and to arrange the handles in a manner to facilitate rocking the tray 22 both in side-to-side directions and front-to-rear directions. Each handle portion or embossment 41 or 42 extends inwardly of, and upwardly along, the associated sidewall 27 or 28 and also extends outwardly of and around the peripheral lip 32 and the depending flange 33. Further, the handle forming embossments 41 and 42 have a substantially shallow, extended U-shaped configuration characterized by a hand-width web portion 43 flanked by a pair of offset ribs as at 44 interconnecting the web with an associated one of the sidewalls 27 and 28, the peripheral lip 32 and the depending flange 33. The sidewall portion of the web 43 is spaced from the depending flange portion of the web a sufficient distance to permit entrance of average sized fingertips therebetween, thereby providing gripping handles formed integrally with the opposed sidewalls 27 and 28.

' tion, the peripheral lip 32 has a portion as at 34 disposed along In accordance with the principles of the presentinvention, the pair of handles 41 and 42, respectively disposed along the sidewalls 27 and 28, are relatively offset with respect to a transverse axis or centerline. Thus, when the tray 22 is gripped at the handle portions 41 and, 42 a moment arm is inherently created about the axis or eenterline to permit an operator to controllably rock the tray in a front-to-rear direction. As illustrated in the drawings, the left-hand handle portion 41 may be centrally disposed along the sidewall 27 between the front wall 24 and the rear wall 26, whereas the right-hand handle portion '42 may be offset forwardly of a central location along the sidewall 28. Further, a rearwardmost rib portion 44 of the handle 42 is positioned forwardly of aforwardmost one of the rib portions 44 of the handle 41, thereby eliminating interference between handle portions formed on adjacently disposed trays. Also, since the handles 41 and 42 are disposed on opposite ones of the sidewalls 27 and 28, a moment arm is formed to permit rocking of the tray from side-to-side about a horizontally disposed axis. It will also be noted that the tray 22 is configured to permit stacking of a plurality of trays in a nested relationship.

Although minor modifications might be suggested by those versed in the art, it should be understood that we wish to embody within the scope of the patent warranted hereon all such modifications as reasonably and properly come within the scope of our contribution to the art.

We claim:

1. For use in a processing sink of the type having a basin portion formed with a generally horizontally disposed bottom wall and an upstanding partition along one side separating the basin from a drain trough, a photographic processing tray comprising: v

a generally planar bottom wall portion forming a supporting surface adapted to be supported on the basin bottom wall,

said bottom wall having means forming passageways enabling fluid circulated in the basin to pass between said tray bottom wall and the basin bottom walli means forming a substantially upstanding wall portion joined to said bottom wall around a periphery thereof and arranged to define a material receiving cavity,

a portion of said upstanding wall being disposed adjacent the partition whenever the tray is supported in the basin on the bottom wall thereof,

means forming an extended lip portion projecting outwardly of an upper edge of said wall portion, and

said wall having a height relative to the partition to enable engagement of said extended lip with an upper extent of the partition whenever said wall portion abuts the partition with said tray bottom wall-supported on the basin bottom wall, thereby providing a pivot axis along a line of engagement between said extended lip and the partition to permit controlled dumping of material from the tray into the drain trough by upwardly tilting the tray about the axis.

2. A photographic processing tray as defined in claim 1 and further characterized by:

said wall portion having a substantially planar configuration and being disposed in a plane slanting upwardly and outwardly of a plane containing said bottom wall to permit complete emptying of the tray contents without tilting said bottom wall to a vertical position.

3. A photographic processing tray as defined in claim 1 wherein said extended lip portion comprises:

a first planar flange portion projecting substantially outwardly from an upper terminal edge of said wall portion and disposed in a plane slanting slightly upwardly of a plane parallel to said bottom wall; and

a second planar flange portion depending from an outer terminal edge of said first flange and terminating above an upper extent of the partition.

4. A photographic processing tray as defined in claim 1 and further characterized by:

said upstanding wall having a pair of substantially planar portions joined to and extending from said one portion at opposite side edges thereof,

each one of said pair of portions having an upper terminal edge tapered downwardly away from said one wall to provide a maximum depth to the material containing cavity near said one wall portion.

5. A photographic processing tray comprising:

a substantially planar bottom wall portion;

means forming an upstanding wall joined to said bottom wall and arranged in a closed configuration to form a material receiving cavity and including a pair of substantially planar, confronting, oppositely disposed wall portions;

means forming a lip extending around a periphery of said upstanding wall at an uppermost edge portion thereof and projecting outwardly of said wall, said lip having a depending flange formed at an outermost edge thereof; and

means forming a handle portion on each of said pairs of wall portions, each said handle portion including an embossment integrally formed with an associated one of said wall portions,

each said handle embossment having a substantially shallow, extended U-shaped configuration providing a hand-width, planar web portion spaced inwardly of said associated wall portion, and a pair of ribs interconnecting opposite side edges of said web with said associated wall portion, and

each said handle embossment extending inwardly of and upwardly along said associated wall portion, continuing around portions of said lip and said depending flange and projecting outwardly therefrom.

6. For use in a processing sink of the type having a basin portion formed with a generally horizontally disposed bottom wall and an upstanding partition along one side separating the basin from a drain trough, a photographic processing tray comprising:

a generally planar bottom wall portion forming a supporting surface adapted to be supported on the basin bottom wall,

means forming a substantially upstanding wall joined around a periphery of said bottom wall and arranged in a closed configuration to define a material receiving cavity,

said upstanding wall including one wall portion disposed adjacent the basin partition, and

means forming an extended lip portion disposed on an upper edge of said one wall portion,

said one wall portion having a height relative to a height of the basin partition so that said extended lip portion engages an upper extent of the partition whenever said one wall portion abuts the partition bottom wall supported on the basin bottom wall thereby to define a horizontal pivot axis between said extended lip and the partition to permit controlled dumping of material from the tray into the drain trough by upwardly tilting the tray about the axis;

a pair of planar wall portions joined to said one wall portion at opposite side edges thereof,

said pair of wall portions having an upper edge thereof tapering downwardly away from said one portion,

means forming a first handle portion on one of said pair of parallel wall portions at a certain location therealong; and

means forming a second handle portion disposed on an opposite one of said pair of parallel wall portions at a location therealong offset from said first handle portion location.

7. A photographic processing tray, for use in a processing sink having a partition separating a basin portion from a drain trough, comprising:

a generally planar bottom wall portion supportable in a basin portion of the processing sink, means forming a substantially upstanding wall joined around a periphery of said bottom wall and arranged in a closed configuration to define a material receiving cavity, said upstanding wall including one wall portion disposed adjacent the partition, means forming an extended lip portion disposed on an upper edge of said wall portion, said one wall portion having a height relative to a height of the partition so that said extended lip portion engages an upper extent of the partition whenever said one wall portion abuts the partition, thereby to define a horizontal pivot axis between said extended lip and the partition to permit controlled dumping of material from the tray into the drain trough by upwardly tilting the tray about the axis; a pair of planar wall portions joined to said one wall portion at opposite side edges thereof, said pair of wall portions having an upper edge thereof tapering downwardly away from said one portion, means forming a first handle portion on one of said pair of parallel wall portions at a certain location therealong;

and means forming a second handle portion disposed on an opposite one of said pair of parallel wall portions at a location therealong offset from said first handle portion location; and said one wall portion having a planar configuration and being disposed in a plane slanting upwardly and outwardly of a plane containing said bottom wall to enable complete emptying of the tray contents into the drain trough without requiring tilting of the bottom wall to a vertical position. 8. For use in a processing sink of the type having a basin portion formed with a generally horizontally disposed bottom wall and an upstanding partition along one side separating the 0 basin from a drain trough, a photographic processing tray comprising:

a generally planar bottom wall portion forming a supporting surface adapted to be supported on the basin bottom wall; means forming a substantially upstanding wall joined to said bottom wall around a periphery thereof and arranged to form a material receiving cavity, said upstanding wall including one planar wall portion disposed adjacent the sink partition and a pair of spaced-apart planar wall portions joined to said one wall portion at opposite sides thereof,

said one wall having means formed on an upper edge thereof for engagement with an upper extent of the sink partition to form a horizontal pivot axis about which the tray may be pivoted to dump the contents thereof into the drain trough, and

said one wall portion slanting upwardly and outwardly of said bottom wall to enable complete emptying of the tray contents into the drain trough without requiring tilting of the bottom wall to a vertical position; and

means forming a manually engageable handle embossment on each of said pair of parallel wall portions with one said handle embossment being offset relative to the other one of said handle embossments to enable controlled rocking of the tray. 

1. For use in a processing sink of the type having a basin portion formed with a generally horizontally disposed bottom wall and an upstanding partition along one side separating the basin from a drain trough, a photographic processing tray comprising: a generally planar bottom wall portion forming a supporting surface adapted to be supported on the basin bottom wall, said bottom wall having means forming passageways enabling fluid circulated in the basin to pass between said tray bottom wall and the basin bottom wall; means forming a substantially upstanding wall portion joined to said bottom wall around a periphery thereof and arranged to define a material receiving cavity, a portion of said upstanding wall being disposed adjacent the partition whenever the tray is supported in the basin on the bottom wall thereof, means forming an extended lip portion projecting outwardly of an upper edge of said wall portion, and said wall having a height relative to the partition to enable engagement of said extended lip with an upper extent of the partition whenever said wall portion abuts the partition with said tray bottom wall supported on the basin bottom wall, thereby providing a pivot axis along a line of engagement between said extended lip and the partition to permit controlled dumping of material from the tray into the drain trough by upwardly tilting the tray about the axis.
 2. A photographic processing tray as defined in claim 1 and further characterized by: said wall portion having a substantially planar configuration and being disposed in a plane slanting upwardly and outwardly of a plane containing said bottom wall to permit complete emptying of the tray contents without tilting said bottom wall to a vertical position.
 3. A photographic processing tray as defined in claim 1 wherein said extended lip portion comprises: a first planar flange portion projecting substantially outwardly from an upper terminal edge of said wall portion and disposed in a plane slanting slightly upwardly of a plane parallel to said bottom wall; and a second planar flange portion depending from an outer terminal edge of said first flange and terminating above an upper extent of the partition.
 4. A photographic processing tray as defined in claim 1 and further characterized by: said upstanding wall having a pair of substantially planar portions joined to and extending from said one portion at opposite side edges thereof, each one of said pair of portions having an upper terminal edge tapered downwardly away from said one wall to provide a maximum depth to the material containing cavity near said one wall portion.
 5. A photographic processing tray comprising: a substantially planar bottom wall portion; means forming an upstanding wall joined to said bottom wall and arranged in a closed configuration to form a material receiving cavity and including a pair of substantially planar, confronting, oppositely disposed wall portions; means forming a lip extending around a periphery of said upstanding wall at an uppermost edge portion thereof and projecting outwardly of said wall, said lip having a depending flange formed at an outermost edge thereof; and means forming a handle portion on each of said pairs of wall portions, each said handle portion including an embossment integrally formed with an associated one of said wall portions, each said handle embossment having a substantially shallow, extended U-shaped configuration providing a hand-width, planar web portion spaced inwardly of said associated wall portion, and a pair of ribs interconnecting opposite side edges of said web with said associated wall portion, and each said handle embossment extending inwardly of and upwardly along said associated wall portion, continuing around portions of said lip and said depending flange and projecting outwardly therefrom.
 6. For use in a processing sink of the type having a basin portion formed with a generally horizontally disposed bottom wall and an upstanding partition along one side separating the basin from a drain trough, a photographic processing tray comprising: a generally planar bottom wall portion forming a supporting surface adapted to be supported on the basin bottom wall, means forming a substantially upstanding wall joined around a periphery of said bottom wall and arranged in a closed configuration to define a material receiving cavity, said upstanding wall including one wall portion disposed adjacent the basin partition, and means forming an extended lip portion disposed on an upper edge of said one wall portion, said one wall portion having a height relative to a height of the basin partition so that said extended lip portion engages an upper extent of the partition whenever said one wAll portion abuts the partition bottom wall supported on the basin bottom wall thereby to define a horizontal pivot axis between said extended lip and the partition to permit controlled dumping of material from the tray into the drain trough by upwardly tilting the tray about the axis; a pair of planar wall portions joined to said one wall portion at opposite side edges thereof, said pair of wall portions having an upper edge thereof tapering downwardly away from said one portion, means forming a first handle portion on one of said pair of parallel wall portions at a certain location therealong; and means forming a second handle portion disposed on an opposite one of said pair of parallel wall portions at a location therealong offset from said first handle portion location.
 7. A photographic processing tray, for use in a processing sink having a partition separating a basin portion from a drain trough, comprising: a generally planar bottom wall portion supportable in a basin portion of the processing sink, means forming a substantially upstanding wall joined around a periphery of said bottom wall and arranged in a closed configuration to define a material receiving cavity, said upstanding wall including one wall portion disposed adjacent the partition, means forming an extended lip portion disposed on an upper edge of said wall portion, said one wall portion having a height relative to a height of the partition so that said extended lip portion engages an upper extent of the partition whenever said one wall portion abuts the partition, thereby to define a horizontal pivot axis between said extended lip and the partition to permit controlled dumping of material from the tray into the drain trough by upwardly tilting the tray about the axis; a pair of planar wall portions joined to said one wall portion at opposite side edges thereof, said pair of wall portions having an upper edge thereof tapering downwardly away from said one portion, means forming a first handle portion on one of said pair of parallel wall portions at a certain location therealong; and means forming a second handle portion disposed on an opposite one of said pair of parallel wall portions at a location therealong offset from said first handle portion location; and said one wall portion having a planar configuration and being disposed in a plane slanting upwardly and outwardly of a plane containing said bottom wall to enable complete emptying of the tray contents into the drain trough without requiring tilting of the bottom wall to a vertical position.
 8. For use in a processing sink of the type having a basin portion formed with a generally horizontally disposed bottom wall and an upstanding partition along one side separating the basin from a drain trough, a photographic processing tray comprising: a generally planar bottom wall portion forming a supporting surface adapted to be supported on the basin bottom wall; means forming a substantially upstanding wall joined to said bottom wall around a periphery thereof and arranged to form a material receiving cavity, said upstanding wall including one planar wall portion disposed adjacent the sink partition and a pair of spaced-apart planar wall portions joined to said one wall portion at opposite sides thereof, said one wall having means formed on an upper edge thereof for engagement with an upper extent of the sink partition to form a horizontal pivot axis about which the tray may be pivoted to dump the contents thereof into the drain trough, and said one wall portion slanting upwardly and outwardly of said bottom wall to enable complete emptying of the tray contents into the drain trough without requiring tilting of the bottom wall to a vertical position; and means forming a manually engageable handle embossment on each of said pair of parallel wall portions with one said handle embossment being offset relative to the other one of said handle embossments to enAble controlled rocking of the tray. 